Cisco AS5800 Specifications download pdf (Page 308)

Glossary

Cisco AS5800 Operations, Administration, Maintenance, and Provisioning Guide

DOC-7810814=

line signaling

When configuring a router for signaling, line signaling can be used for both inbound and outbound calls. The line signaling

configuration must match the corresponding telco switch configuration.

local area network (LAN)

Intraoffice communication system usually used to provide data transmission in addition to voice transmission.

local exchange carrier (LEC)

Any company that is engaged in the provision of telephone exchange service or exchange access.

loopback

A method of performing transmission tests on a circuit not requiring the assistance of personnel at the distant end. A diagnostic

test that returns a transmitted signal to the sending device after it has passed through a network or across a particular link. The

returned signal can then be compared to the transmitted one. The discrepancy between the two helps you to trace faults. When

you are trying to locate a faulty piece of equipment, you can use repeated loopbacks to eliminate healthy machines until the

problem is found.

loopback interface

A logical interface on the router that can be used for diagnostics and troubleshooting purposes. It is also used to conserve

address space so other physical interfaces can be unnumbered to this interface. The state of the Loopback interface is always

UP/UP.

management information base (MIB)

A database of network management information that is used and maintained by a network management protocol such as CMIP

(Common Management Information Protocol) or SNMP (Simple Network Management Protocol). The value of a MIB object

can be changed or retrieved using CMIP or SNMP commands, usually through a GUI-based network management system. MIB

objects are organized in a tree structure that includes public (standard) and private (proprietary) branches.

MICA

Multiservice Cisco IOS Channel Aggregation. Technology that enables the simultaneous support of remote-access users

through both analog modems and ISDN devices.

modem

A device that converts digital signals generated by a computer into analog signals for transmission over telephone lines.

Modems also convert analog signals from telephone lines into digital signals for computer use. (The term stands for

modulator/demodulator).

modem pools

The modem pool covers a specified range of modems that accept calls based on the number called by dialin users. If there is

only one dial-in number, then all modems can be defined under the default modem pool. It is also used for modem firmware

upgrades.

modulation

Alterations in the characteristics of carrier waves. Usually impressed on the amplitude and the frequency.

1 2 ... 303 304 305 306 307 308 309 310 311 312 313 ... 333 334

No comments

Cisco AS5800 Specifications Page 308